JP2542384Y2 - Coil bobbin with insulation tube - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil bobbin with an insulating cylinder for a high-voltage transformer in a power supply for lighting a cathode ray tube or the like.

[0002]

2. Description of the Related Art Conventionally, this type of high-voltage transformer has a plurality of flanges mounted on a winding cylinder for winding a winding so that a voltage generated in a secondary winding becomes a high voltage of 1500 V to 2000 V. Insulation between the primary winding on the low voltage side and the secondary winding on the high voltage side shall be insulated with an insulating tape between layers and an insulating material in the case of small-sized ones. Was wound between the layers of the primary and secondary windings, but lacked in workability, and the winding frame became large in the length direction because multiple collars were attached to the winding cylinder, making it difficult for transformers. However, there is a drawback that the shape when it is formed becomes large.

[0003]

[Problems to be Solved by the Invention] The present invention generates a high voltage because a high-voltage output voltage is obtained, and a highly reliable, compact, vertical transformer with a magnetic core standing upright on the pedestal surface. In order to separate the windings to be wound and the windings on the low voltage side, the upper bobbin with the coil bobbin mounted on the low voltage side and fitted with an insulating cylinder to insulate the high voltage side and the low voltage side, Separate into the pedestal to which the winding tube for applying the winding is attached, and ultrasonically weld the tip of the upper flange side insulating tube to the pedestal, and use the insulating tube to separate the low voltage side winding and the public voltage side winding between the windings. An object of the present invention is to provide a coil bobbin with an insulating cylinder that can completely insulate a winding that generates a high voltage and a winding on a low voltage side with a structure that completely insulates electric power.

[0004]

According to the present invention, a high voltage side output terminal, a low voltage side output, and a low voltage side terminal for leading a primary winding are mounted on both sides of a pedestal. A vertical coil bobbin with a magnetic core inserted into the magnetic leg and a winding cylinder for winding the winding mounted vertically to the surface of the pedestal, and a winding frame with a flange attached to the end of the winding cylinder attached to the pedestal, In the center of the pedestal, a winding cylinder for inserting and assembling the magnetic leg of the magnetic core, and an insulating cylinder for positioning and positioning an insulating flange of an upper flange, which will be described later, on the pedestal on which the winding cylinder is mounted, for securing electrical insulation. An insulating cylinder positioning groove for welding the tip is provided to electrically isolate and isolate the inner winding cylinder that enters the inside of the pedestal-side winding cylinder, and the low-voltage winding and the high-voltage winding on the outer periphery of the inner winding cylinder. The upper collar has an insulating cylinder attached to the collar. The impregnating hole that passes through the winding part, the impregnating hole that passes through the inside of the high-voltage side winding that was similarly wound on the pedestal when the varnish was impregnated, and the lead wire drawing hole that pulls out the lead wire are the root of the winding cylinder and With the structure mounted on the inner part of the insulating cylinder positioning groove, the winding of the pedestal is wound on the public voltage side, and the upper collar on which the inner winding cylinder and the insulating cylinder are mounted is fitted to the pedestal,
A high-voltage transformer using a coil bobbin with an insulating cylinder is obtained by welding the tip of the upper insulating cylinder to the insulating cylinder positioning groove of the pedestal and winding the low-voltage side winding on the insulating cylinder.

That is, according to the present invention, terminals are implanted at both ends, a magnetic leg of a magnetic core is incorporated in the center, a winding tube is wound around the outer periphery, and a winding tube is provided around the winding tube around the winding tube. An insulating cylinder positioning groove for fitting and welding the tip of the insulating cylinder of the flange; at least one impregnation hole penetrating a pedestal provided inside the insulating cylinder positioning groove; a position in contact with the winding cylinder and positioning of the insulating cylinder A pedestal provided with a lead wire lead-out hole attached to a position close to the groove, and an inner winding tube inserted into the winding tube of the pedestal at the center of the flange and incorporating the magnetic leg of the magnetic core therein, and an inner winding An insulating tube mounted on the outer periphery of the tube at a position corresponding to the insulating tube positioning groove of the pedestal, and at least one impregnation hole penetrating the flange surface on which the inner winding tube and the insulating tube are mounted. Insert the inner bobbin of the upper collar into the bobbin of the pedestal. An insulating tube with a coil bobbin, characterized in that formed by fitting welded insulating cylinder groove and the upper flange decided.

[0006]

[Function] The winding cylinder provided on the pedestal serves as the core of the high-voltage side winding, and the winding cylinder provided on the upper flange is an inner winding cylinder inserted into the wrapping of the pedestal. It is inserted inside and increases the creepage distance between the magnetic core and the magnetic leg to increase the electrical insulation voltage with the magnetic core. The upper sleeve insulation tube fits into the insulation tube positioning groove provided on the pedestal surface and is ultrasonically welded, so the high voltage side winding and the low voltage side winding are electrically isolated and insulated, and the high voltage side winding At the beginning of the wire lead wire, pass through the lead wire extraction hole attached in contact with the winding tube, pass through the lower surface of the pedestal and lead out to the terminal.At the end of winding, insert the lead wire extraction hole installed near the insulation positioning groove. The lead wire is drawn through the terminal along the groove on the bottom of the pedestal and connected to the terminal. The lead wire between the lead wire lead-out hole and the terminal is adhered and fixed to the pedestal with a single-sided adhesive insulating tape.The impregnation hole provided between the upper flange and the mounting position of the pedestal insulating tube and the winding tube is used for vacuum impregnation. The varnish is easily impregnated into the high-voltage windings to complete the electrical insulation process.

[0007]

1 is an external perspective view showing a state in which a high voltage side winding is applied to a coil bobbin with an insulating cylinder according to the present invention and an upper flange side and a pedestal side are ultrasonically welded. FIG. FIG. 3 is a perspective view showing a structure of a coil bobbin with an insulating cylinder according to the present invention, in which a coil bobbin and a pedestal are separated. At the center of the pedestal 2 where the terminals 3a and 3b are implanted on both sides, a winding tube 6 for winding the high-voltage side winding 10 is attached integrally with the pedestal 2. An insulating tube positioning groove 5 for positioning and ultrasonic welding of the insulating tube 4 of the upper flange 1 is provided symmetrically with respect to the winding tube 6. Further, two lead wire lead-out holes 8 are provided inside the position where the pedestal is in contact with the winding cylinder and the insulating cylinder positioning groove, and the varnish is raised on the surface of the pedestal 2 when the high-voltage side winding is impregnated with the vacuum varnish. At least one impregnation hole for impregnating the varnish is attached to the voltage side winding. At the center of the upper collar 1 is mounted an inner winding tube 7 into which a magnetic leg of a magnetic core is incorporated. The inner winding tube is sized to fit inside the winding tube 6 of the pedestal 2.
An insulating tube 4 is attached to the outer periphery of the inner winding tube around the inner winding tube. The insulating tube 4 is formed at a position to be fitted into the insulating tube positioning groove of the pedestal. After winding the side winding, the lead wire is soldered to the lead terminal 3a through the lead wire lead hole 8, the upper flange 1 is put on the pedestal 2, and the end face of the insulating tube 4 and the positioning groove 5 of the insulating tube are ultrasonically welded. After welding, the low voltage side winding and the primary side winding are wound on the insulating tube 4 and the lead wire is soldered to the terminal 3b, and the coil bobbin on which the rear winding is applied is vacuum impregnated with varnish to form a winding. Electrically insulate. A heat-fused electric wire or a wire made of a wire whose surface becomes sticky when a solvent is applied is wound on the wire of the high-voltage side winding wound around the winding cylinder of the pedestal. The high voltage side winding is wound between the flanges provided on the end face of the winding jig, and the winding is wound. After winding, the windings are adhered to each other using a solvent to solidify the wire, and the pedestal is removed from the winding jig. The embodiment of the present invention
Although the shapes of the winding cylinder, the insulating cylinder, and the flange have been described as being square,
Naturally, the present invention can be implemented in a circular or elliptical shape.

[0008]

According to the invention, at least one impregnation hole is provided in the winding cylinder and the insulating cylinder positioning groove provided on the pedestal, the inner winding cylinder and the insulating cylinder provided on the upper flange, and the upper flange of the pedestal. Combine with Tsuba,
Since the coil bobbin with the insulating cylinder is formed by fitting and welding the tip of the insulating cylinder of the upper flange to the insulating cylinder positioning groove of the pedestal, the high voltage side winding is wound around the winding cylinder, and the high voltage side winding is insulated. This is a coil bobbin with an insulating cylinder, characterized in that the coil is wound with a low-voltage side winding on the upper surface of the insulating cylinder and impregnated with a high-voltage winding by impregnation with a vacuum varnish. By using the coil bobbin with the insulating cylinder according to the invention, a vertical high-voltage transformer having a small size and high electric withstand voltage characteristics can be obtained.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a coil bobbin with an insulating cylinder according to the present invention.

FIG. 2 is an exploded perspective view showing an upper flange and a pedestal of a coil bobbin with an insulating cylinder according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper flange 2 Base 3a, 3b Terminal 4 Insulating cylinder 5 Insulating cylinder positioning groove 6 Reel 7 Inner reel 8 Lead wire lead-out hole 9 Impregnation hole 10 High voltage side winding 11 Flange

Claims (1)

(57) [Scope of request for utility model registration] 1. A winding tube in which terminals are implanted at both ends, a magnetic leg of a magnetic core is incorporated in the center, and a winding is wound around the outer periphery, and an upper flange provided around the winding tube around the winding tube. An insulating cylinder positioning groove for fitting and welding the tip of the cylinder; at least one impregnation hole penetrating a pedestal provided inside the insulating cylinder positioning groove; a position in contact with the winding cylinder and close to the insulating cylinder positioning groove A pedestal provided with a lead wire lead-out hole mounted at a position, and an inner winding tube inserted into the center of the flange and inserted into the winding tube of the pedestal and incorporating the magnetic leg of the magnetic core therein, and an outer periphery of the inner winding tube An insulating cylinder attached to a position corresponding to the insulating cylinder positioning groove of the pedestal, and an upper flange provided with at least one impregnation hole that penetrates a flange surface on which the inner winding cylinder and the insulating cylinder are mounted. , Insert the inner sleeve of the upper flange into the winding cylinder of the pedestal, A coil bobbin with an insulating cylinder, wherein the insulating cylinder is fitted and welded.